6881458349 has 2 divisors, whose sum is σ = 6881458350. Its totient is φ = 6881458348.

The previous prime is 6881458319. The next prime is 6881458391. The reversal of 6881458349 is 9438541886.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6836809225 + 44649124 = 82685^2 + 6682^2 .

It is a cyclic number.

It is not a de Polignac number, because 6881458349 - 2¹² = 6881454253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6881458294 and 6881458303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6881458319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440729174 + 3440729175.

It is an arithmetic number, because the mean of its divisors is an integer number (3440729175).

Almost surely, 2^6881458349 is an apocalyptic number.

It is an amenable number.

6881458349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6881458349 is an equidigital number, since it uses as much as digits as its factorization.

6881458349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 56.

The square root of 6881458349 is about 82954.5559267241. Note that the first 3 decimals coincide. The cubic root of 6881458349 is about 1902.0714572282.

The spelling of 6881458349 in words is "six billion, eight hundred eighty-one million, four hundred fifty-eight thousand, three hundred forty-nine".